Well-drill.



PATENTED OGTQIS, 1903.

M. M. LONG.

WELL DRILL. APPLIOATION FILED MAY 1B, 1903.

lllllnllll'l I ll" WI'I'NBS a a, g

Patented October 13, 1903.

ATFNT FFICE.

MARION M. LONG, CANTON, ILLINOIS.

WELL-DRILL.

SPECIFICATION forming part of Letters Patent No. 741,150, dated October13, 1903.

7 Application filed May 18, 1903. Serial Ila 157,741. (N0 model.)

To all whom, it mag concern.-

Be it known that I, MARION M. LONG, a citizen of the United States,residing at Canton, in the county of Fulton and State of Illinois, haveinvented certain new and useful Improvements in Well-Drills; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same.

This invention has reference to drills for Well-boring purposes.

The primary object of such invention is to furnish means for preventinga well-drill becoming loosened and separated from its stem while at workin the ground.

A further object of the invention is to provide means for continuallytaking up the looseness between the drill audits stem caused by constantjarring and hammering while at work.

Still another object is to provide locking means between the drill andits stem, but which may be readily disengaged from said drill and stemto. allow separation of those members.

In the drawings appended, Figure 1 is a side elevation of a well-drilland its carryingstem. Fig. 2 is a sectional elevation of the drill-stem,showing the drill-shank screwed thereinto. Fig. 3 is a cross-section ofthe stem which carries the drill and also a cross-section of thedrill-shank. Fig. 4 is a sectional elevation of the stem, showingv ribstherein and a movable collar for locking the drill and stem together.Fig. 5 is a plan view of the drillshank. Fig. 6 is an elevation of aportion of the drill. Fig. 7 is a sectional longitudinal View of thedrill shown in Fig. 6. Fig. Sis an end view of the drill as viewed fromits lower end. Fig. 9 is a perspective view of a portion of the drill.

Aindicates the stem which carries the drill, such stem being usuallycarried at the end of a cable attached to the well-boring machine. Saidshank is made hollow at its lower enlarged end, as shown at B in Figs. 2and 4E, and is internally threaded to receive the shank G of the drillD, as shown in Fig. 2, which is also threaded to correspond. The shankand the bore B are'tapered, as shown, so that the members will be madetighter as they are screwed home. The bore B is a straight and perfectlysmooth one except for a series of ribs E, located as shown in Figs. 3and 4., being made integral with the stem or secured thereto, as foundmost convenient. Made with the shank O of the drill is a fluted stud F.This stud has a series of ribs G and extends up into the bore B, so thatthe ribs thereon are opposite those of the said stem, as seen in Fig. 2.Now a locking-collar H is provided to slip down between the two seriesof ribs, as indicated in Fig. 3, said collar being of cylindrical form,having a rib I inside extending the entire length thereof. Also on theouter surface of the collar is a wedge shaped rib J, Whose slanting faceis designed to bear against the slanting surface ofany one of the ribs Ein the stem A, as will be hereinafter pointed out. The cross-seotion ofthe rib I corresponds exactly with the spaces between the ribs G on thestud F, as shown in said Fig. 3, all the said spaces being of the samegeneral form, so that the said rib I will freely enter them. The ribs Gand spaces between them are arranged vertically, as shown, while thoseof the stem A slant, as shown in Fig. 4:. The tendency of a drill ofthis kind used in well-boring is to constantly become loosened, so thatoften it is entirely unscrewed from its stem and lost. Sometimes thedrill is recovered after much labor and annoyance but very often it ishopelessly lost, so that another drill must be attached to the stembefore the work can proceed. It is seen that much expense is attached toa loss of. this kind, to say nothing of the time consumed in the attemptto recover the lost implement.

The drill if it strikes a solid immovable object below ground in justthe right way will loosen and in the greatest number of cases willunscrew slightly at each stroke. This of course, means that the tendencyis to unscrew more than tighten, and it is the intention,therefore,toprevent the unscrewing and constantly take up the play between the partsby entering a wedge between the ribs E of the stem each time the drillscrews tighter, being entered little by little at each stroke ofsufficient force to move the parts within one another. The stem is asolid piece from one end to the other, so that there are no jointstherein to become loosened. The drill is also made of one piece, and theonly joint in the entire device is at the point where the drill and stemare screwed together. In assembling the parts the collar H is enteredinto the bore B, rib J being passed up between the ribs E, the spacebetween the latter being of a width to permit the said rib J to freelypass. When raised above the ribs E, the collar is held by means of aset-screw K in the stem A, as shown in Fig. 4, said screw forcing thecollar against the side of the bore opposite it, and thus clamping itagainst movement. Next the drill is screwed up into the bore until thelower end of the stem is seated on the flange D of the drill. Then onloosening the screw the collar is allowed to fall upon the ribs of thestem and the stud.

By removing the screw K at this time a pointed instrument may be enteredthrough the aperture left thereby, by which the collar may be turnedaround on end until its ribs I and J reach spaces between the ribs G andthe ribs E, or a position substantially as indicated in Fig. 3. Inreaching such a position the collar will naturally fall of its ownweight until the beveled surface of the rib J meets the beveled surfaceof one of the ribs E, where the collar will remain until by the jarringof the drill, which is now in condition for work, the stem begins to Aif it moves at all on the shank C will be able to turn in but onedirection-11 e., toward the right, or in a direction to tighten thethreads-and this movement will be followed by a further entrance of thewedge or rib J between the ribs E, as before stated, it being wellunderstood that said rib J in entering between the members E contactswith the same on both surfaces,so that retracting movement of thedrillis absolutely prevented. After long-continued use the collar willfinally have reached its lowest position, as indicated in Fig. 2, atwhich time it is raised from that position and turned around, as before,until the ribs I and J register with properly-located spaces betweenribs E and G. It is designed to so space the ribs of both the drill andthe stem that at some point two of the spaces cf these series of ribswill properly register, so as to readily receive the ribs I and J as thecollar is turned around for a new entrance.

In order to easily remove the collar H after being seated at its lowestposition or when desiring to separate the drill and stem, a hole L isdrilled Vertically through the shank C of the drill justbeneath thecollar, said hole terminating within a channel of the drill at M, andsaid channel is further deepened by a milling-tool to form a largeopening through which a drift may be entered to force the collar I-I upinto the bore B of the shank. Thus it will be seen that said collar maybe very easily handled from the outside in raising it and adjusting itfor reentrance. In order that mud and water may be kept from enteringthe stem A, the hole L is closed by means of a set-screw N. This isremoved when it is desired to enter the drift to raise the collar. Theset-screw K also prevents entrance of mud and water, and the tight jointbetween the drill and shank also holds out the water, so that theinterior is kept absolutely clean.

It is evident that the only proper method of locking the drill and stemtogether is by some such arrangement as I describe. The outer surfacesof the members must be kept smooth, so as not to interfere with theboring operation, and nothing must be permitted outside. Therefore theinterior is the place for employing a locking device, and by its useother tools such as are used in well-drilling can be employed, therebymaking the drill stem interchangeable with various implements.

It is evident that the drill and stem may be secured together by othermeans than screwthreads, and I do not wish to confine myself to anyparticular construction in this respect.

I claim 1. In a drill for well-boring, locking means therefor, thedrill, the stem for carrying it and a device for entrance between thedrillshank and the stem for preventing separation of said drill and stemfor the purposes described.

2. In a drill for well-boring purposes, a drill, a stem for carrying it,said portions being screwed together, a fluted stud on the drill-shank,ribs on the inner surface of the stem and a locking device adapted toengage the said fluted portion of the drill and the said ribs of theshank for preventing separation of the parts.

3. A well-drilling implement comprising a drill, a stem for carrying thesame, said drill and stem being screwed together, and means within thestem for engaging said stem and drill for preventing unscrewing of thedrill from the stem.

4. A well-drilling implement comprising a drill, a stem for carrying thesame, said drill and stem being attached to one another by means ofscrew-threads, a series of Vertical ribs on the drill, a series of ribson the stem, a device for entrance between the ribs of the respectivemembers and ribs on said device for engaging the two series of ribs forthe purposes set forth and described.

5. A well-drilling implement comprising a drill, a stem for carrying itand from which it is detachable, ribs in the drill-shank, ribs in thestem such ribs being opposite one another, there being an annular spacebetween said ribs of the drill and stem and a ribbed collar adapted toenter between the drillshank and stem for engaging the ribs of boththese members and preventing such members becoming loosened or separatedexcept at will as set forth.

6. A well-drilling implement comprising a drill, a stem to which saiddrill is detachably secured by means of screw-threads,verticallydisposed ribs on the drill-shank, substantially verticallydisposed ribs on the interior of the shank into which the drill isscrewed, there being an annular space between the two series of ribs, acollar adapted to descend vertically between said series of ribs, astraight rib on the interior surface of the collar, and a wedge-shapedrib onthe outer surface thereof for engaging the ribs on the drill andthose on the stem respectively for the purposes set forth and described.

7. In an implement for well-boring purposes, a drill, a carrying-stemtherefor, said drill and stem being connected as by screwthreads, thestem being hollow, a vertical extension on the drill adapted to enterthe hollow stem, a series of vertical ribs 'disposed around the saidextension substantially as described, a series of ribs disposed aroundthe inner surface of the hollow stem said ribs havinga slanting orbeveled surface substantially as described, there being an annular spacebetween the two series of ribs, a collar adapted to enter and fill saidannularvspace, a vertical rib on the inner surface of the collar forentering between the ribs of the drill extension, and a rib on the outersurface of the collar the same having a beveled surface to engage thebeveled ribs of the drill substantially as and for the purposesexplained.

8. Awell-drillingimplementcomprisingthe drill D, having the shank C, thestem A having the opening B therein, said shank and opening B beingscrew-threaded for allowing one to engage the other as set forth, thestud F on the drill-shank, the vertical ribs G on said stud arrangedsubstantially as illustrated, ribs E disposed around the interior of thestem A substantially as shown and described, there being an annularspace created between the two series of ribs, the collar H having thestraight rib I on its inner surface for engaging the spaces between theribs G, and also having the tapering rib J for outering between the ribsE as set forth.

9. Awell-drillingimplementcomprising the drill D having the shank O, thestem A having the opening B therein, said shank and opening B beingscrew-threaded for allowing one to engage the other as set forth, thestud F on the drill-shank, the vertical ribs G on said stud arrangedsubstantially as illustrated, ribs E disposed around the interior of thestem A substantially as shown and described, there being an annularspace between the two series of ribs, the collar H having the straightrib I on its inner surface for engaging the spaces between the ribs Gand also having the tapering rib J on its surface for entering betweenthe ribs E as set forth and for the purposes explained, there being ahole Lin the drill-shank beneath the said collar H as shown anddescribed.

In testimony whereof I affix my signature in presence of two witnesses.

MARION M. LONG. Witnesses:

E. A. HEALD, L. O. WEBSTER.

